EditorGUI.PrefixLabel

Parameters

Returns

Rect 屏幕上仅适用于控件本身的矩形。

Description

创建一个显示在特定控件前的标签。

Prefix Label in an Editor Window.

请注意，大多数编辑器控件已具有可以指定为参数之一的内置可选标签。如果没有此类可用的内置标签，或要从头开始创建自己的编辑器控件，则可以使用 PrefixLabel。

PrefixLabel 获取用于整个控件（包括标签）的矩形，并返回一个仅适用于控件本身（不包括标签）的矩形。

PrefixLabel 还可确保在单击标签时，关联的控件可获取键盘焦点（如果此控件支持键盘焦点）。关联的控件的 ID 可以选择性地进行指定；如果未提供 ID，标签会自动关联到其后的控件。

// Inflates a mesh
//
// Usage: Select a mesh and drag it to the object field.
// Press calculate and after finishing just press play and see your mesh growing.
//
// Note: To control the ratio of inflation just change the increaseRatio
// var in the "InflateMesh.js" sript

class InflateMeshEditor extends EditorWindow {

    var object : MeshFilter;

    @MenuItem("Examples/Inflate Mesh")
    static function Init () {
        var window = GetWindow (InflateMeshEditor);
        window.Show ();
    }

    function OnGUI () {
        var rect = EditorGUILayout.GetControlRect ();
        rect = EditorGUI.PrefixLabel (rect, GUIContent ("Select a mesh"));
        object = EditorGUI.ObjectField (rect,
                "Calculate:",
                object,
                MeshFilter);

        EditorGUI.BeginDisabledGroup (!object);
        if(GUI.Button (EditorGUILayout.GetControlRect (), "Calculate!"))
            Calculate ();
        EditorGUI.EndDisabledGroup ();
    }

    function Calculate () {
        var finalNormals = new Vector3[0];
        var mesh = object.sharedMesh;
        var vertices = mesh.vertices;
        var normals = mesh.normals;

        // Find identical vertices
        // this will hold an ID for each vertex, vertices at
        // the same position will share the same ID!
        var vertexIDs = new int[vertices.length];
        var counter : int = 0;

        for (var i = 0; i < vertices.length; i++) {
            for (var j = 0; j < vertices.length; j++) {
                if (vertexIDs[i] == 0) {
                    counter++;
                    vertexIDs[i] = counter;
                }
                if (i != j)
                    if (vertices[i] == vertices[j] &amp;&amp; vertices[i] != 0)
                        vertexIDs[j] = vertexIDs[i];
            }
        }

        finalNormals = normals;
        calculated = 0.5;
        // Calcualte average normals
        // counter is the highest vertexID, now go through all the groups and collect normal data
        for (var k = 1; k <= counter; k++) {
            var curAvgNormal : Vector3 = Vector3.zero;
            for (var l = 0; l < vertexIDs.length; l++)
                if (vertexIDs[l] == k) {
                    // Add up all the normals of the vertices with identical positions
                    curAvgNormal += normals[l];
                }
            curAvgNormal.Normalize(); //Normalize the result
            for (var m = 0; m < vertexIDs.length; m++)
                if (vertexIDs[m] == k)
                    finalNormals[m] = curAvgNormal;
        }
        object.gameObject.AddComponent ("InflateMesh").fNormals = finalNormals;
        Debug.Log ("Done Adding Component, press play and see your mesh being inflated!");
    }
}

附加到编辑器脚本的脚本：

// InflateMesh.js
private var mesh : Mesh;
private var vertices = new Vector3[0];
private var normals = new Vector3[0];
var fNormals = new Vector3[0];
var increaseRatio = 0.005;
function Start () {
    mesh = GetComponent (MeshFilter).mesh;
    vertices = mesh.vertices;
    normals = mesh.normals;
}

function Update () {
    for (var i = 0; i < vertices.length; i++) {
        vertices[i] += fNormals[i]  * Time.deltaTime * increaseRatio;
    }
    mesh.vertices = vertices;
}